Guidewire Software (GWRE) 10-K 2018 FY Annual report

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Guidewire Software, Inc. for the year ended July 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Marcus S. Ryu, as Chief Executive Officer of Guidewire Software, Inc., hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge, the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Guidewire Software, Inc.

Date:	September 18, 2018	By:	/s/ Marcus S. Ryu
			Marcus S. Ryu
			President and Chief Executive Officer
			(Principal Executive Officer)

 In connection with the Annual Report on Form 10-K of Guidewire Software, Inc. for the year ended July 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Curtis Smith, as Chief Financial Officer of Guidewire Software, Inc., hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge, the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Guidewire Software, Inc.

Date:	September 18, 2018	By:	/s/ Curtis Smith
			Curtis Smith
			Chief Financial Officer
			(Principal Financial and Accounting Officer)